CN206920575U - A kind of practical power parameter detection means - Google Patents
A kind of practical power parameter detection means Download PDFInfo
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- CN206920575U CN206920575U CN201720959263.4U CN201720959263U CN206920575U CN 206920575 U CN206920575 U CN 206920575U CN 201720959263 U CN201720959263 U CN 201720959263U CN 206920575 U CN206920575 U CN 206920575U
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Abstract
The utility model discloses a kind of practical power parameter detection means, belong to power detector field, power parameter detection means includes embedded controller, signal acquisition circuit, drive circuit and power circuit, the input through keyboard circuit electrically connects with the command input of the embedded controller, and the display signal output part of the embedded controller electrically connects with the display driver circuit.Practical power parameter detection means provided by the utility model, the detection limits such as electric current, voltage can be isolated and amplified, detect fast accurate visual inspection result, Consumer's Experience is good.
Description
Technical field
Power detector field is the utility model is related to, more particularly to a kind of practical power parameter detection dress
Put.
Background technology
In the electronic information epoch, D.C. regulated power supply is a kind of electric energy feedway being most widely used, and it extensively should
For mobile phone, notebook, toy, laboratory apparatus etc., some arrange the equipment for needing dc source.D.C. regulated power supply stability and
The stability and reliability of reliability and electronic product are closely bound up, and the unstable of power supply not only easily causes electronic product performance
It is unstable, and easily there is superheating phenomenon, the D.C. regulated power supply of excellent performance is often that electronic product is normal for a long time
The important leverage used.How can guarantee that D.C. regulated power supply has excellent performanceFirstly the need of to D.C. regulated power supply
Performance parameter detected, obtain several basic parameters of D.C. regulated power supply, such as：Power and efficiency parameters etc., so as to
The quality of electronic product is adjusted in time for production and quality inspection.
Chinese patent literature publication number CNCN101191825U discloses a kind of direct-current power supply detection device, including a multistage
Bleeder circuit, an analog-digital converter and a controller.The multistage bleeder circuit includes at least two electronic switches, at least two
Shunt resistance and a main road resistance, the first pole of the electronic switch pass through corresponding shunt resistance and the main road resistance respectively
First end electrical connection, the second pole ground connection of the electronic switch, the second end of the main road resistance and dc source to be measured electricity
Connection, the analog-digital converter electrically connect with the first end of the main road resistance, the controller and the simulation numeral
3rd pole of converter and the electronic switch electrically connects, and the controller is according to the output control of the analog-digital converter
Corresponding electronic switch conducting, makes the shunt resistance that the electronic switch with the conducting electrically connects be turned on ground.This direct current
Different detection limits is not carried out isolation amplification, the stability and essence of detection by source detection means during parameter detecting
Degree is not high, it is difficult to the quality of product is evaluated, and have input-output equipment, user is inconvenient for use, it is impossible to soon
Speed bandwagon effect directly perceived.
Utility model content
The defects of in order to overcome prior art, technical problem to be solved in the utility model are to propose that one kind is practical
Power parameter detection means, the detection limits such as electric current, voltage can be isolated and amplified, detect fast accurate visual inspection result, used
Experience at family.
To use following technical scheme up to this purpose, the utility model：
The utility model provides a kind of including embedded controller, signal acquisition circuit, drive circuit and power electricity
Road, input through keyboard circuit and display driver circuit, the current sampling port of the signal acquisition circuit are amplified by the first isolation
Circuit electrically connects with the first signal input part of the embedded controller, and the voltage sampling port of the signal acquisition circuit passes through
Second isolating amplifier circuit electrically connects with the secondary signal input of the embedded controller, the embedded controller
Pwm signal output end is electrically connected by optical coupling isolation circuit, filter circuit with the signal input part of the drive circuit, the drive
Dynamic circuit is electrically connected by the power circuit with the signal output part of the signal acquisition circuit, the input through keyboard circuit and
The command input electrical connection of the embedded controller, display signal output part and the display of the embedded controller
Drive circuit electrically connects.
The utility model preferably technical scheme, in addition to feedback control circuit, the input of the feedback control circuit
Electrically connected with the signal acquisition circuit, the output end of the feedback control circuit electrically connects with the drive circuit.
The utility model preferably technical scheme, in addition to telecommunication circuit, the output end of the telecommunication circuit with it is described embedding
Enter the signal of communication input electrical connection of formula controller, the signal of communication output end of the embedded controller and the electricity that communicates
The input electrical connection on road.
The utility model preferably technical scheme, in addition to electric power management circuit, the electric power management circuit with it is described embedding
It is equal to enter formula controller, the drive circuit, the optical coupling isolation circuit, the input through keyboard circuit and the filter circuit
Electrical connection.
The utility model preferably technical scheme, the signal acquisition circuit include test port, voltage sample resistance and
Current sampling resistor, the voltage sample resistance are arranged in parallel with the test port, the current sampling resistor and the survey
Examination port is arranged in series.
The utility model preferably technical scheme, the voltage sample resistance include first voltage sampling resistor and second
Voltage sample resistance, the first voltage sampling resistor are connected with the second voltage sampling resistor, the second isolation amplification
Wire between the input of circuit and the first voltage sampling resistor, the second voltage sampling resistor electrically connects, described
One end of current sampling resistor electrically connects with one end of the second voltage sampling resistor, the other end of the current sampling resistor
Electrically connected with first isolating amplifier circuit.
The utility model preferably technical scheme, the embedded controller are configured to STC12C5620AD single-chip microcomputers, institute
State the second isolated amplifier in the first isolated amplifier in the first isolating amplifier circuit and/second isolating amplifier circuit
HCPL788 is configured to, the power circuit is configured to metal-oxide-semiconductor circuit.
The utility model preferably technical scheme, the input through keyboard circuit are configured to 4 × 4 matrix keyboards.
The beneficial effects of the utility model are：
Practical power parameter detection means provided by the utility model, there is provided input through keyboard circuit and display driving electricity
Road, default power technology parameter can easily be inputted by input through keyboard circuit, greatly improve power parameter detection dress
The practicality put, by display driver circuit can convenient real measurement result, greatly improve power parameter detection means
Intuitive.First isolating amplifier circuit and the second isolating amplifier circuit, the isolation of the detection limits such as electric current, voltage is enabled to put
Greatly, power circuit is avoided to produce interference, this is due to that the power circuit electrically connected with sampling end is typically configured to metal-oxide-semiconductor, power
Circuit voltage and curent change scope are bigger, and power supply to be measured also can produce much noise on power circuit and electromagnetism is done
Disturb, so as to influence detection stability, accuracy and the reliability of power parameter detection means, and be provided with isolating amplifier circuit just
Can effectively it solve the above problems.
Brief description of the drawings
Fig. 1 is the structural representation for the practical power parameter detection means that the utility model embodiment provides；
Fig. 2 is the circuit diagram for the embedded controller that the utility model embodiment provides；
Fig. 3 is the circuit diagram for the input through keyboard circuit that the utility model embodiment provides；
Fig. 4 is the circuit diagram for the display driver circuit that the utility model embodiment provides.
In figure：
1st, embedded controller；2nd, signal acquisition circuit；3rd, drive circuit；4th, power circuit；5th, the first isolation amplification electricity
Road；6th, the second isolating amplifier circuit；7th, optical coupling isolation circuit；8th, filter circuit；9th, feedback control circuit；10th, input through keyboard electricity
Road；11st, telecommunication circuit；12nd, electric power management circuit；13rd, display driver circuit；21st, test port；23rd, current sampling resistor；
221st, first voltage sampling resistor；222nd, second voltage sampling resistor.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
As shown in figure 1, a kind of practical power parameter detection means provided in the present embodiment, including embedded controller
1st, signal acquisition circuit 2, drive circuit 3, power circuit 4, the first isolating amplifier circuit 5, the second isolating amplifier circuit 6, optocoupler
Isolation circuit 7, filter circuit 8, input through keyboard circuit 10 and display driver circuit 13, embedded controller 1 are used for control signal
Acquisition Circuit 2, drive circuit 3 and power circuit 4 etc., and pwm signal can be calculated by preset algorithm, so as to drive circuit
3 are controlled, and signal acquisition circuit 2 is mainly used in collection voltages signal and current signal etc., and drive circuit 3 is mainly used in driving
Power circuit 4 and signal acquisition circuit 2, power circuit 4 are configured to metal-oxide-semiconductor circuit, the isolation of the first isolating amplifier circuit 5, second
Amplifying circuit 6 is respectively used to the isolation amplification of current signal, voltage signal, and optical coupling isolation circuit 7 is used for the isolation of pwm signal,
Filter circuit 8 is used for the filtering of pwm signal.The current sampling port of signal acquisition circuit 2 by the first isolating amplifier circuit 5 with it is embedding
Enter the first signal input part electrical connection of formula controller 1, the voltage sampling port of signal acquisition circuit 2 passes through the second isolation amplification electricity
Road 6 electrically connects with the secondary signal input of embedded controller 1, the first isolated amplifier in the first isolating amplifier circuit 5
HCPL788 is configured to the second isolated amplifier in the/the second isolating amplifier circuit 6.The pwm signal of embedded controller 1 is defeated
Go out end to electrically connect with the signal input part of drive circuit 3 by optical coupling isolation circuit 7, filter circuit 8, specifically, embedded control
The pwm signal output end of device 1 processed electrically connects with the input of optical coupling isolation circuit 7, the output end of optical coupling isolation circuit 7 and filtering
The input electrical connection of circuit 8, the output end of filter circuit 8 electrically connect with the signal input part of drive circuit 3.Drive circuit 3
Electrically connected by power circuit 4 with the signal output part of signal acquisition circuit 2.Current value, the voltage of the collection of signal acquisition circuit 2
After value carries out isolation amplification by the first isolating amplifier circuit 5, the second isolating amplifier circuit 6 respectively, transmit to embedded Control
Device 1, embedded controller 1 calculate pwm signal according to preset algorithm, and pwm signal is isolated by optical coupling isolation circuit 7, and
After circuit 8 is filtered processing after filtering again, transmits and control to be measured to drive circuit 3, the driving power circuit 4 of drive circuit 3
Power supply exports stabling current and burning voltage.Controlled from the driving power circuit 4 of drive circuit 3 that collects of current value, magnitude of voltage
Power supply to be measured, just formed a closed-loop control system, so as to ensure power supply to be measured accurately, stably export stabling current with
Burning voltage.Input through keyboard circuit 10 electrically connects with the command input of embedded controller 1, so as to realize that power supply to be measured is basic
The input of parameter.As shown in figure 3, it is further preferred that input through keyboard circuit 10 is configured to 4 × 4 matrix keyboards, in the present embodiment
4 × 4 matrix keyboard connected modes and different, conventional 4 × 4 matrix keyboards of 4 × 4 conventional matrix keyboard connected modes
8 lines and monolithic mechatronics are needed, and 4 × 4 matrix keyboards in the present embodiment only draw 7 lines and STC12C5620AD is mono-
Piece mechatronics, it is line KeyBoardLine0, KeyBoardLine2, KeyBoardLine3 respectively；Alignment
KeyBoardLine4, KeyBoardLine5, KeyBoardLine6, KeyBoardLine7, while added 2 diodes.
The display signal output part of embedded controller 1 electrically connects with display driver circuit 13.Display driver circuit 13 is by three
MAX7219 chips and six charactron compositions, the charactron of three MAX7219 chip drives, six quaternities.Such as Fig. 4 institutes
Show, be a piece of two quaternities of MAX7219 chip drives charactron, the DIN pins of MAX7219 chips with
STC12C5620AD single-chip microcomputers I/O pin electrically connects, the serial input terminal as data.The LOAD pins of three MAX7219 chips
Interconnect, CLK pin interconnects, then the I/O pin with STC12C5620AD single-chip microcomputers is electrically connected respectively
Connect, clocks of the CLK as data serial transmission, latch control terminals of the LOAD as data.
In order to further improve the stability and reliability of practical power parameter detection means, it is preferable that practical electricity
Source parameter detection device also includes feedback control circuit 9, and the input of feedback control circuit 9 electrically connects with signal acquisition circuit 2,
The output end of feedback control circuit 9 electrically connects with drive circuit 3, and feedback control circuit 9 can improve drive circuit 3 and power electricity
The stability and reliability of the gain of road 4, and then lift the overall accuracy of detection of practical power parameter detection means.
As shown in Fig. 2 for the ease of effectively being controlled practical power parameter detection means, it is preferable that embedded
Formula controller 1 is configured to STC12C5620AD single-chip microcomputers, and STC12C5620AD single-chip microcomputers are electrically connected with crystal oscillating circuit and reset circuit
Connect, the power end of STC12C5620AD single-chip microcomputers is additionally provided with bypass circuit, for eliminating High-frequency Interference.STC12C5620AD is mono-
PWM0 the and PWM1 pins of piece machine are used for the output of pwm signal, and ADC0 is used for the input that electric current uses passage 1, and ADC1 is used for
The input of current sample passage 2, ADC2 are used for the input of voltage sample passage, and tri- pins of MOSI, MISO, SCLK are used for showing
Show that drive circuit 13 enters row data communication, realize the display directly perceived of testing result, two pins of RXD and TXD are used for and serial ports core
Piece MAX232 enters row data communication, and P2.0, P2.1, P2.2, P2.3, P2.5, P2.6, P2.7 have 7 I/O pins altogether and be used for key
Disk input circuit 10 is scanned.
Practical power parameter detection means is communicated with computer or other peripheral hardwares for convenience, further,
Practical power parameter detection means also includes telecommunication circuit 11, the output end of telecommunication circuit 11 and leading to for embedded controller 1
Believe signal input part electrical connection, the signal of communication output end of embedded controller 1 electrically connects with the input of telecommunication circuit 11, from
And the signal communication of the other equipment such as STC12C5620AD single-chip microcomputers and other computers is realized, it is easy to practical power parameter to examine
Survey device data storage and displaying directly perceived.
In order to ensure that the power supply of practical power parameter detection means modules is supplied, practical power parameter detection dress
Putting also includes electric power management circuit 12, electric power management circuit 12 and embedded controller 1, drive circuit 3, optical coupling isolation circuit 7,
Input through keyboard circuit 10 and filter circuit 8 electrically connect, be embedded controller 1, drive circuit 3, optical coupling isolation circuit 7,
Input through keyboard circuit 10 and the grade of filter circuit 8 main member provide power supply.Electric power management circuit 12 can realize practical electricity
Source parameter detection device bulk supply.
As shown in figure 1, the real-time collection of voltage, current signal for convenience, further, signal acquisition circuit 2 includes
Test port 21, voltage sample resistance and current sampling resistor 23, voltage sample resistance are arranged in parallel with test port 21, electric current
Sampling resistor 23 is arranged in series with test port 21.Voltage sample resistance includes first voltage sampling resistor 221 and second voltage
Sampling resistor 222, first voltage sampling resistor 221 are connected with second voltage sampling resistor 222, the second isolating amplifier circuit 6
Wire between input and first voltage sampling resistor 221, second voltage sampling resistor 222 electrically connects, current sampling resistor
23 one end is electrically connected with one end of second voltage sampling resistor 222, and the other end of current sampling resistor 23 is isolated with first to be put
Big circuit 5 electrically connects, so as to realize effective collection of voltage, electric current with isolating amplification.The practical electricity provided in the present embodiment
Source parameter detection device is provided with the first isolating amplifier circuit 5 and the second isolating amplifier circuit 6, enables to electric current, voltage etc.
Detection limit isolation amplification, avoids power circuit from producing interference.
In actual use, operating personnel select corresponding test function pattern and technical parameter by input through keyboard circuit 10
Preset value, pwm signal is corresponded to according to generation test function pattern and technical parameter preset value using embedded controller 1, passed through
Optical coupling isolation circuit 7, filter circuit 8 are converted into analog voltage, then by the drive control of drive circuit 3 to power circuit 4, so that
Metal-oxide-semiconductor conduction amount in power circuit 4 is controlled, metal-oxide-semiconductor absorbs required operating current at power supply to be measured.Embedded controller 1
The voltage and current Real-time Feedback of power supply to be measured is input to embedded controller 1 by real-time sampling, and in display driver circuit 13
In show, the functional mode and technical parameter preset value that embedded controller 1 inputs according to operating personnel are carried out to score
Analysis, adjusts metal-oxide-semiconductor conduction amount again after comparative analysis, until detection parameters meet the preset value of setting.Embedded controller 1
Quick, visual evaluation is provided according to whether the power technology parameter returned of detection sampling feedback is up to standard to power quality.If parameter
It is qualified, output display " Pass ", otherwise show " Not ".
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case of with new spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with new, other embodiments fallen into claims hereof all belong to
In the scope of the utility model protection.
Claims (8)
- A kind of 1. practical power parameter detection means, it is characterised in that：Including embedded controller（1）, signal acquisition circuit（2）, drive circuit（3）And power circuit（4）, input through keyboard Circuit（10）And display driver circuit（13）；The signal acquisition circuit（2）Current sampling port pass through the first isolating amplifier circuit（5）With the embedded controller （1）The first signal input part electrical connection, the signal acquisition circuit（2）Voltage sampling port pass through the second isolating amplifier circuit （6）With the embedded controller（1）Secondary signal input electrical connection, the embedded controller（1）Pwm signal it is defeated Go out end and pass through optical coupling isolation circuit（7）, filter circuit（8）With the drive circuit（3）Signal input part electrical connection, the drive Dynamic circuit（3）Pass through the power circuit（4）With the signal acquisition circuit（2）Signal output part electrical connection, the keyboard Input circuit（10）With the embedded controller（1）Command input electrical connection, the embedded controller（1）Display Signal output part and the display driver circuit（13）Electrical connection.
- 2. practical power parameter detection means according to claim 1, it is characterised in that：Also include feedback control circuit（9）；The feedback control circuit（9）Input and the signal acquisition circuit（2）Electrical connection；The feedback control circuit（9）Output end and the drive circuit（3）Electrical connection.
- 3. practical power parameter detection means according to claim 1, it is characterised in that：Also include telecommunication circuit（11）；The telecommunication circuit（11）Output end and the embedded controller（1）Signal of communication input electrical connection, it is described Embedded controller（1）Signal of communication output end and the telecommunication circuit（11）Input electrical connection.
- 4. practical power parameter detection means according to claim 1, it is characterised in that：Also include electric power management circuit（12）；The electric power management circuit（12）With the embedded controller（1）, the drive circuit（3）, light-coupled isolation electricity Road（7）, the input through keyboard circuit（10）And the filter circuit（8）Electrically connect.
- 5. practical power parameter detection means according to claim 1, it is characterised in that：The signal acquisition circuit（2）Including test port（21）, voltage sample resistance and current sampling resistor（23）；The voltage sample resistance and the test port（21）It is arranged in parallel；The current sampling resistor（23）With the test port（21）It is arranged in series.
- 6. practical power parameter detection means according to claim 5, it is characterised in that：The voltage sample resistance includes first voltage sampling resistor（221）And second voltage sampling resistor（222）；The first voltage sampling resistor（221）With the second voltage sampling resistor（222）Series connection；Second isolating amplifier circuit（6）Input and the first voltage sampling resistor（221）, the second voltage adopts Sample resistance（222）Between wire electrical connection；The current sampling resistor（23）One end and the second voltage sampling resistor（222）One end electrical connection；The current sampling resistor（23）The other end and first isolating amplifier circuit（5）Electrical connection.
- 7. practical power parameter detection means according to claim 1, it is characterised in that：The embedded controller（1）It is configured to STC12C5620AD single-chip microcomputers；First isolating amplifier circuit（5）In the first isolated amplifier and/second isolating amplifier circuit（6）In Two isolated amplifiers are configured to HCPL788；The power circuit（4）It is configured to metal-oxide-semiconductor circuit.
- 8. practical power parameter detection means according to claim 1, it is characterised in thatThe input through keyboard circuit（10）It is configured to 4 × 4 matrix keyboards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720959263.4U CN206920575U (en) | 2017-08-02 | 2017-08-02 | A kind of practical power parameter detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720959263.4U CN206920575U (en) | 2017-08-02 | 2017-08-02 | A kind of practical power parameter detection means |
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| Publication Number | Publication Date |
|---|---|
| CN206920575U true CN206920575U (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720959263.4U Expired - Fee Related CN206920575U (en) | 2017-08-02 | 2017-08-02 | A kind of practical power parameter detection means |
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| Country | Link |
|---|---|
| CN (1) | CN206920575U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924890A (en) * | 2021-02-18 | 2021-06-08 | 联想(北京)有限公司 | Method and device for detecting power supply and electronic equipment |
-
2017
- 2017-08-02 CN CN201720959263.4U patent/CN206920575U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924890A (en) * | 2021-02-18 | 2021-06-08 | 联想(北京)有限公司 | Method and device for detecting power supply and electronic equipment |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20180802 |
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| CF01 | Termination of patent right due to non-payment of annual fee |